Grain-scourer.



No. 635,480. Patented net-24,1899. H. HEINRICH.

GRAIN SCOUREB.

(Application filed July 80, 1898.) (No Model.) 2 Shoets-Sheet l,

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H. HEINRICH. GRAIN SCDURER. (Application filed. July 30; 1898.)

2 Sheets-Sheet 2.

(No Model.)

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AZZarzzeys UNITED STATES PATENT @FFICE.

HERMANN HEINRICH, OF DOLLNITZ, GERMANY.

GRAlN-SCOURER.

SPECIFICATION forming part of Letters Patent No. 635,480, dated October24, 1899.

Serial No. 687,352. (No model.)

To aZZ whom, it may concern:

Be it known that I, HERMANN HEINRICH, a citizen of the Kingdom ofPrussia, and a resident of Dollnitz, in the Kingdom of Prussia andGerman Empire, have invented certain new and useful Improvements inGrain-Scourers, of which the following is a specification.

My invention relates to grain-scouring machines, and particularly tosuch destined for peeling such kind of grain which must not be injured.

In the accompanying drawings the machine as described in the followinglines is clearly shown.

Figure 1 shows the machine in vertical section. Fig. 2 is a plan ofsame. Fig. 3 represents the hub of the revolving arms on an enlargedscale. Fig. 4 shows the same in plan view; Fig. 5, the same part, thearms swung into another position. Fig. 6 is a plan of the corrugatedbottom and a section through the same. Fig. 7 is a detail view of thescraper in action. Fig. 7 is a similar view from the front. Fig. 7 is aback view, and Fig. 7 is a bottom view.

In the center of a hopper A, secured in the casing A is situated avertical shaft B, which by means of its lower journal may be lowered orraised at will by means of the screw 0. A bevel-gear D D, which may bearranged above or below the machine, imparts the movement to the shaft.Instead of the bevel-gear a belt or rope transmission may be used to thesame effect. Immediately above the bottom of the machine there is adistributing-plate E, fixed to the shaft B. A little farther up there isa hub G, with arms I, put over the shaft B. By means of a screw H it maybe clamped to the shaft. The ends of the arms I bear a ring B. On thearms the funnel A is fixed. The bottom of the machine is provided withan annular channel M at its circumference, in which are providedopenings N. Immediately above the distributor E arms F are fixed to theshaft i B, extending toward the circumference of ring R and swinging onbolts :1: are the hori zontal arms K. They rest in notches got the ringR and extend to near the circumference of the machine. To these arms arefixed scrapers S, which, in conjunction with the corrugated bottom, peelthe grains.

The bottom L of the machine consists of wood, zinc, porcelain, orsimilar material. Its surface is provided with corrugations spreadingfrom the center to the periphery in straight or curved lines. Thecorrugations must be without sharp edges or projections in order toavoid any injuring of the grains. On their front side the arms K haveupturned flanges K, forked at their upper end and having a squarehole.Opposite the flange the arm is slotted in the manner indicated in Figs.7 and 7 thereby preventing an accumulation of the grain on the arm,which would prevent the scraper from returning to its proper position.

The scraper is formed by a metallic body of the form shown in Fig. 7having on its under side also longitudinal corrugations with roundededges. Its upper end terminates in an arm a, corresponding in length tothe breadth of the arm K. By means of a tongue I) it projects throughthe opening in the upturned flange of the arm. A secohd projection 0bears against the back side of the arm K. A pin cl reaches from the neckof the scraper to the forked end of the flange. It bears a spiral springwhich bears against the neck of the scraper and against the forkedflange of the arm. This spring tends to hold the scraper down.

The machine acts in the following way: The grain isputintothehopperA.Thedistributer E spreads it over the bottom and exposes it to the actionof the scrapers. The corrugao tions of the scrapers are in normalposition rectangular to the corrugations of the bottom. They grasp thegrains and press them slightly, revolving them at the same time on theirproper axis. Neither the corrugations 5 of the bottom nor of the scraperhaving sharp edges,the grains cannot be damaged; but they are perfectlypeeled. The radial or curved corrugations of the bottom, in conjunctionwith the corrugations of the scrapers and the centrifugal force,transport the grains from the center to the periphery. The velocity withwhich this transportation takes place may be influenced by inclining thearms K more or lifted and pass over the obstacle.

less forward or backward against the radius of the machine. If theirouter ends follow the inner ones, as shown in Fig. 5, the front sides ofthe scrapers are turned toward the periphery. The transporting of thegrain there fore takes place more quickly than if the front sides wereturned toward the center, as indicated in Fig. 5 by dotted lines. Theposition of the arms is regulated by means of the sleeve G and of thering R, which is fixed to it. The clamp-screw H is loosened, the sleeveC is given a turn to one side or the other, and the ends of the armswhich are fixed to the sleeve follow the movement, thereby moving theother ends in opposite direction.

If an accumulation of the grains takes place, they nevertheless will notsuffer in any way, because the scraper in this case will be The numberof scrapers fixed to each arm may be increased or decreased at Will.

What I claim as my invention is In a grain-scourer, the combination withthe stationary horizontal bed and vertical driving-shaft, of a ringrigidly connected with said shaft, a plurality of arms pivotally con-'nected with said ringand movable in a plane parallel to the bed, asecond ring or collar ad j ustably mounted on the shaft and havingpivotal connection with said arms, and scrapers yieldingly carried bysaid arms, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

HERMANN HEINRICH.

\Vitnesses:

HENRY HASPER, C. H. DAY.

